[PATCH][AVR] Remove the ATmega603 device

[Anatoly Sokolov]

> The patch below removes support for the ATmega603 device which was never
> produced.
>
> 2007-10-18  Eric B. Weddington  <eweddington@cso.atmel.com>
>
> * config/avr/avr.c (avr_mcu_types): Remove ATmega603 which was never
>        produced.
> * config/avr/avr.h (LINK_SPEC): Likewise.
> (CRT_BINUTILS_SPECS): Likewsie.
> * config/avr/t-avr (MULTILIB_MATCHES): Likewise.
>
 Applied.

Anatoly.